[1840–50; insurg(ent) + -ence]This word is first recorded in the period 1840–50. Other words that entered English
at around the same time include: layout, sensationalism, set piece, striation, warmup-ence is a suffix used to form nouns either from adjectives in -ent or from verbs. Other words that use the affix -ence include: acquiescence, coherence, diffluence, interference, precedence